Extrude multiple cylinders from one
From 6 vertices for the base cylinder and 3 tentacles in the picture, you can assemble it in three parts :


First assemble the extremity, extruding one vertex on two
Extrude them (without moving)
Alt+M to join them at center
Then select more Ctrl+NumPad+
And make the faces F





Now select the three faces as the extremity
Extrude them with Alt+E then "individual faces"
Separate this faces a bit





Now round them using Alt+ShiftS and move the mouse to the right and validate
Then extrude again